From the above link:
On the morning of Sunday, July 28, Hoagland drove his silver VW Golf to pick up bagels at Bagel Delight and put half a tank of gas in his car at Newtown Mobil. A few hours later, he ate breakfast with his son Max, mowed the lawn -- and disappeared. He apparently left behind his shoes, his phone, his car, his passport and his blood pressure medication. (More than two weeks later, Lori found his wallet and keys hidden under a doll on a chair in their bedroom.)
This would seem like an important piece of the puzzle. That his keys and wallet were "hidden" under a doll in their bedroom.